Grease-trap.



PATENTED OUT. 11, 1904.

P. H. PARADIGE.

GREASE TRAP.

APPLICATION FILED my 11, 1903.

NO MODEL UNITED STATES Patented October 11, 1904.

PATENT OFFICE.

' GREASE-TRAP.

SPECIFICATION forming part of Letters Patent N 0. 771,927, dated October11, 1904.

Application filed May 11, 1903.

To all 1072,0711 it may concern:

Be it known that I, FRANK H. PARADIOE, a citizen of the United States,residing at Denver, in the county of Denver and State of Colorado, haveinvented a new and useful Grease-Trap, fication.

My invention relates to improvements in grease-traps which are installedin dwellings, hotels, and other buildings for the purpose ofintercepting grease that is carried in the waste water from sinks andother apparatus.

Some grease-traps as heretofore made have water-jackets surrounding thechamber where the grease is collected, and others have a water-pipepassing through them for the purpose of chilling the waste water, andthus causing the grease to rise to top of trap. Others depend entirelyon the waste water retained in trap to chill the incoming waste watersufliciently to cause the grease to rise to surface of the water. Thislast-described trap is'not effective. The first-described intercepts alarger proportion of grease, but does not stop all the grease in thewaste water, and both are objectionable, for the reason that they retaina large quantity of waste water and sediment that becomes foul, and thisoflensive matter causes a stench in the house when the trap is opened toremove the grease. This operation takes quite a long time. Tobe at alleffective, the water-jacket trap must be made large, too large to setunder the kitchen-sink, and have suflicient room to remove its contents.

My invention is an improvement over the grease-traps as heretofore madein the following particulars: It causes the waste water to flow verymuch slower through the trap. A smaller quantity of sediment and wastewater is retained in the trap, and this is all eject' ed from trap intothe sewer before it is opened to remove the grease. The coolingchamberis much more effective, as the water circulates over the top of trap,where the cool surface should be. A serviceable greasetrap with myimprovement can be made much smaller than as before made, enabling it tobe placed underneath the sink. As it opens at the front in place of ontop, it is accessiof which the following is a speci- Serial No. 156,724.(No model.)

ble. As the cover or' door is partly below water-lines it is not liableto be imperfectly fastened, (as the trap with cover on top is,) for thereason that if improperly fastened a water leak would occur, while aleak in the top cover would not be visibly indicated. The grease can beremoved much quicker and with less labor from my improved greasetrap.

Now having described traps as heretofore made and stated, wherein mytrap is an improvement over them, I'will by the following specificationand the accompanying drawings explain improvements in my grease-trap.

Having reference to the drawings, Figure 1 is a vertical section of thegrease-trap. Fig. 2 is a plan on the line 11. Fig. 3 is a View of thecover of the side opening for removal of grease. Fig. 4: is aperspective view of part of the trap, showing the trap open with thecleaners or scrapers drawn out and a box on floor ready to catch thegrease as it falls from the scrapers when the rod or strap of ironispassed around them, as is indicated by the hands holding the ends ofthe. rod. Fig. 5 is an end view of cover and one scraper. It also showsthe end of rod resting in hook, said rod being a continuation of thescraper. Fig. 6 is a plan view of the trap at 2 2 in section, Fig. 1,showing the channels for the cold water to circulate through.

Similar figures refer to similar parts throughout the several views.

7 is inlet'of stench-trap leading from sink.

8 is vent-pipe.

9-is the part of stench-trap that contains the water to prevent gasespassing through the sink connection into room.

10 10 1O 10 are fastenings to clamp cover, Fig. 3, to trap.

11 is a swinging leg to support cover and scraper when same are drawnout to remove grease.

12 is the pipe through which water passes when trap is being flushedpreceding the removal of the grease. 13 is the stop-cock controllingsame.

14 at Fig. 5 represents one of the scrapers. 14 1A at Fig. 4: representsall the scrapers.

is the rod for removing the grease from the scrapers.

16 is the outlet from the grease-trap.

17 is the valve or gate which is opened when flushing the trap.

18 is stuffing-box.

19 is a flap-valve which is closed by the water from pipe 12 when trapis being flushed.

20 is the inlet of the cooling-pipe. 21 is the outlet of same.

22 is the handle of gate.

In order to install my grease-trap, the sinkwaste is connected totrap-pipe 7 and vent 8 is connected to vent-pipe. The trap now beingempty and the cover, Fig. 3, being closed and the scrapers in thechannels 23 23, each channel containing a scraper, the ends of samecoming close up to the ends of channels, the flap 19 being in its normalposition -that is, hori- Zontal lying over the pipe 12, the gate 17 isclosed, as in Fig. 1. The cold-water pipe is connected to 20, and theoutlet 21 is connected to boiler or run to sink or connected to any pipethrough which all or the greater part of the cold water passes, thestop-valve 13 being closed. After the lirst waste water passes throughgrease-trap the stench-trap is filled to a point on a level with thedotted lines across Fig. 1, and the grease-trap is filled to dottedlines, Fig. 1. As the water has passed (in an ordinary-sized trap) abouttwenty feet, it will have become cooled, even if when entering trap ithad been quite hot. The grease would be chilled and stuck to sides ofchannels or floating on water which remains in greasetrap. The wastewater flowing through thereafter will cause the grease to rise up andcling to the sides of channels and to the scrapers in the channels.WVhen a stoppage of waste from sink indicates that the grease should beremoved, the gate 17 is raised by handle 22, and the stop-cock 13 isopened, the Water closing 19, which prevents water from backing up intosink or vent, putting the force of the water on the sediment andpartially Washing the grease. The stop-valve 13 is then turned off andgate 17 put down, and the cover, Fig. 3, is unfastened and drawn back tothe position shown at Fig. 1, thus pulling out the scrapers 14, and asthese are made the full width of the channels all the grease is scrapedout of trap, some of it falling into a box or other suitable receptacle,and the part clinging to the scrapers is quickly removed by passing rodfrom where shown at Fig. 1 up to top of cover 3, thence across scrapers14, thence down to bottom of scrapers. The rod is then to be returned tothe hooks provided to receive it, it being shut into trap and alwaysavailable for the purpose.

Having described my invention and its use, what I claim as new, and forwhich I desire that Letters Patent be granted me, is

- A grease-trap having a sinuous passage for waste water, and a sinuouspassage for cooling-water, a stench-trap with valve at inlet, a gate atoutlet,aflushingpipe with stop-valve, a vertical cover, or door, withattached scrapers and scraping-rod, substantially as shown.

In testimony whereof I aflix my signature in presence of two witnesses.

FRANK H. PARADIOE.

\Vitnesses:

FRANK M. HAvENs, G. A. BOSLER.

